Stop-motion device for looms



c. c. PENNELL STOP MOTION DEVICE FOR LOOMS April 8 1924.

Filed May 1921 2 Sheets-Sheet lv Til-10- 1 I0 W m8}, O I Cjrarlea af mveu April 8 1924.

c. c. PENNELL STOP MOTION DEVICE FOR LOOMS Filed May 9, 1921 2 Sheets-Sheet 2 Patented Apr. 8, 1924.

CHARLES c. PE NELL, or T'HonNnALnrENNs'YLvANIA.

sror Mo'rIoN DEVICE; roa noo'i'vrs.

' Application 1 filed May 9, e

To all whom it may concern:

Be it known that I, CHARLES a citizen of the United" States, residing'at Thorndale, in the county of Chester and State of Pennsylvaniay have invented certain new and-useful Improvements in Stop- Motion Devices for Looms,'of which the following is a specification.

his application is a continuation in part of my former application for United-States Patent, Serial No. 449,415 filed March' 3rd 1921, which'ha's been abandoned.

One object of my present "invention is to provide an improved 'device'which will-operate to automatically effect the stopping-of a loom when any of the heddle frames. some times termed shafts, accidentally falls. Thus my invention is instrumental in preventing injury to the loom or tothe warp or fabric since it immediately operates to, effect the stopping'of the loom before-injury can occur to the parts.

It is a further object of the inventionto provide an improved stop motion device for looms which will quickly and automatically effect the stopping of-the loom when any of the heddle frames accidentally falls, and which is operative independently of such parts as produce the weaving action-{such as the lay, feeler or other which are directly connected with the weaving action 'or'for the working parts of the loom.

Another object is to make the device of my invention of a durable construction which is positive in its action and which can be readily secured in operative position upon practically all types'of looms.

These objects, and other advantageous ends which will be described hereinaften'l attain C. PENNELL,

in the following manner, reference being had to the accompanying'drawings in which Figure l is a front elevation of my'improved device shown in-connection with a loom; the frame of the loom being shown in 'dot-and-dash lines and the heddle frames or sha'ftsbeing illustrated in full lines, Figure 2 j is a side elevation of my invention illustrating the parts --in the position 'p p r y Figure 3 is a 'view' of thesame general character'ns shown in Figure2 illustrating how my invention operates to" eflect the-stopping of 'the loom *when'any of the heddle frames or shafts-accidei1tally falls,

corresponding par ts which they assume when the'loo-m is operat- 5 frames of difierent thoroughly compreh'ended from the "following description.

1921. Seria1No; 467.996.

Figure 4 is an enlarged fragmentary front elevationshowing a 1 portion of a supporting standard and adj ustablebearing. for a transverse rod which orms a part of my-rinvention,

Figure 5 is a top plan view of-Figure' l,

Figure 6 isa' section taken on the line 6--6 of Figure4,

Figure 7 is a fragmentary perspective view showing a lever'and actuating pin which form a part of my'invention,

Figure 8 isafragm'entary front elevation illustrating tion,

Figure 9 is a'fra'gmentary enli'irged side elevation 'of'certain of the elements shown in'FigureB,

a modified form of my inven- Figure 10 isa section taken onthe- 'line l0-10 of Figure 9, V

Figure 11 is an enlarged-section through certain of the parts shown in Figure 8, and Figure 12 is a side elevation-of the same general character as shown inliiguref? illustrating how themodified form dfhry'device operates to stop the loom when" heddle frames accidentally falls.

Referring ,to the drawings and particularly to the form of my'de'vice shown in Figures 1 to 7 inclusive, 9 represents the heddle frames or shafts which may be of any of the usual constructions and which are supported on cords 10; the operation of the heddle frames being efiected in'any well known manner and in the present instanceare dependent'upon the-cordslO to efi'ect=motion so as to form the sheds of the warpandit'will be understood that when the cords 10 break or become detached fromthe heddle frames that the latter will fall and ordinarily thisfalling causes injury to the-warp and to-the fabric produced. e

My invention inc'ludesa'rod llwhich extends transversely between the" sides of the frame 12 of theloom' and this rod is supported in bearing *blocks 13' which I are" adjustably slidable upwardlyand downwardly on standards 13. Said standards "are 'secured in-thepresent instance to the floor and the bearing blocks can 5 be secured "to" these standards by clamping screws l3 as clearly shown in Figi'1res-i2, 5"and 6. Thus-the rod 11 canbe easily andquickly secured at any suitable height to accommodate "heddle sizes as will be -more any of the standard v can be made of heavy -wire which is .coiled at its top to provide the spring 19. I

A collar or abutting member 22 is adjustably secured to the bar 18 above the spring 19 and'is adapted to engage and normally rest upon the top of the spring 19. The lower end of the bar 18 has a projection 18 extending laterally for the purpose of abut ting the lower end of the spring when the bar 18 moves upwardly during the action of the device to effect the stopping of the loom when a heddle frame accidentally falls;

said spring serving as a cushioning member to absorb the shock. A weight 23 is adjustably mounted on the balancing arm 16 and normally tends to hold the arms 14 in the position shown in Figures 1 and 2 with the portion 18 of the bar 18 below the spring 19 with the collar 22 forming the limiting means for the downwardmovement' of the bar 18 due to the engagement of said collar with the top of the spring 19, all as clearly shown in Figure 2.

A post 24 is secured to the floor between the sides of the frame 12 as shown in Figure 1 and this post has a latch 25 pivoted thereto at 26; said latch having a hook 27 adapted to engage over the end 28 of a stop arm 29; said stop arm being pivoted at 30 to the post 24 and having a link rod 31 pivotally connected thereto; said link rod extending forwardly and being pivotally connected to one end 32 of a bell crank lever 33; said bell crank lever 33 being pivoted at 34 and having an arm 35 provided with an anti-friction roller 36 adapted to engage the knock-oil lever'37 of the loom. This knock-off lever can be of any construction usually present on a loom and which when moved by the anti-friction roller will effect the stopping of the loom either through the operation of a clutch, the shifting of a belt, or any other manner in which looms are stopped. The latch 25 has a heavy end 38 depending below the pivot 26; said 'end 38 normally being engaged by one end of a rock arm 39; said rock arm being pivoted at 40 to the post 24. A lever 41 is secured on the rod 11 and has a pin 42 secured thereto and adapted to engage the lower end of the rock arm 39. This pin 42 can be adjustably mounted on the arm 41 so that if it is necessary to raise or lower the rod 11 to accommodate heddle frames of different sizes the pin 42 can be moved so as to occupy a proper position with respect to the arm 39. The stop arm 29 is preferably provided with a weight 43. An abutting member 44 is adjustably secured to the post 24 below the stop arm 29.

If, during the operation of the loom, any one of the heddle frames accidentally falls it will strike against either or both of the arms 14 and the weight and impact of the heddle frame will cause the rod 11 tobe rocked in its bearings and the lever 41 will be moved to cause the pin 42 to rock the arm 39 and during this rocking of the arm 39, its upper end will swing the latch 25 on its pivot 26 and the hook 27 will be moved away from the end 28 of the stop arm 29. The stop arm 29 owing to its weight will swing downwardly crank lever 33 to cause the anti-friction roller 36 thereon to move the knock-0E lever and thereby effect the stopping of the loom. It will be noted that during this action the bar'18 will beraised and its portion 18 will engage the bottom of the spring19 and the latter will absorb the shock and prevent undue noise.

After the heddle frame, which has accidentally fallen, has been again tied in its proper operating position the rod 11 will swing automatically due tothe weight imposed on the balancing arm 16 and the lever 41 will be moved into a position to free the pin 42 of the rock arm 39 and the stop arm 29 can then be raised so as to be engaged again by the hook 27 and if desired this lifting of the stop arm 29 can be effected through the medium of a cord or rope 46 which may lead to any convenient position on the loo-m so that it can be grasped by the weaver and pulled to efifect the raising of said stop arm; it being noted that the heavy end 38 of the latch 25 will automatically swing said latch'to move the hook 27 in position holding the stop arm 29 in its raised position. During-this-action, the bell crank lever 33 will be moved so that the knock-off lever 37 can be actuated again to start the loom.

It will be noted that after the arms 14 have been relieved of the weight of the heddle frame that the collar 22 will again move downwardly and engage the top. of the spring and the spring will serve as acushioning member to absorb the shock of this movement. It will be further noted that the collar 22 regulates theupward swinging movement of the arms 14 and thus the col and the link 31 will operate the bell lar serves to provide adjustment to -suit va- 7 rious conditions. 7

In the form of my invention shown in Figures 8 to 12 inclusive, the pin 42 of the lever41 operates directly on the latch 25*; said latch being pivotally mounted at 26 to a portion of a weight housing post 24. In this instance, I employ a weight 47 of the V 48 slidable within the housing 47 and normally resting on the end 49 of a pivoted lever 50; the other end 51 of said lever 50 being engaged under the hook 27 of said latch 25*. The weight 4.8 is connected by a cord 52 to the knock-off lever 37 it being noted that ordinarily the weight 48 is prevented from falling by the end 51 of the lever 50 being under latch 25.

As shown in Figure 12 if any one ofthe heddle frames accidentally falls, the rod 11 will be rocked in a manner described in c0nnection with Figures 1 to 3 and the pin 42 will rock the latch 25 to move the hook 27 from over the end 51 of the lever 50. The weight 48 will then fall and operate the knock-off lever 37 to stop the loom.

\Vhile I have described my invention as taking aparticular form, it will be under stood that the various parts of my invention may be changed without departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is l. A stop motion device for looms having a controlling member to effect the stopping of the loom; means for operating the controlling member to stop the loom, said means including a rockable member having spaced arms extending under a heddle frame of the loom to be operated by the descending frame to rock said member, a lever having an operative engagement with the controlling member, latch mechanism operable upon operation of the rockable member for actuating the lever; and cushioning means open able by said rockable member, said means including abalanced arm connected to said rockable member, a movable rod member having a connection to the balanced arm, and a resilient member embracing the rod member for resisting movement of said member.

2. The combination with a loom having means operative to effect the stopping of the loom, of a device including a weighted member; means positioned to be moved by the hook 27 of the a falling heddle frame; a latch for normally holding said weighted member, said latter means having a portion adapted to release said latch from holding engagement with the weighted member when said latter means is moved by the falling of a heddle frame, said Weighted member having a portion operative to move said first mentioned means to stop the loom; and means providing a resilient stop for limiting the movement of said second mentioned means by the heddle frame; substantially as described.

3. A. device of the character described, for use in connection with a loom having means operative to effect the stopping of the loom, including a weighted member; a rod; an arm on said rod adapted to be moved by a falling heddle frame; a second arm on said rod; means providing a resilient stop for said second arm;.a latch for holding engagement with said weighted member; means on said rod adapted, when said first arm is moved by a falling heddle frame, to release said latch from holding engagement with said weighted member; and means connected to said weighted member and adapted to move said first means to effect the stopping of the loom; substantially as described.

4:. A device of the character described, for use in connection with a loom having means operative to effect the stopping of the loom, including a weighted member; a rod; an arm on said rod adapted to be moved by a falling heddle frame; a second arm on said rod; a cushioning spring; a bar connected to said second arm and having a portion for engagement with said spring; a latch for holding engagement with said weighted member; said first arm is moved by a falling heddle frame, to release said latch from holding engagement with said weighted member; and means connected to said weighted member and adapted to move said first means to effect the stopping of the loom; substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES C. PENNELL.

Witnesses:

R. J ONES PATRICK, W. H. CLARK.

means on said rod adapted, when 

